package demo1;

import java.util.Scanner;
import java.math.BigInteger;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            BigInteger a = in.nextBigInteger();
            BigInteger b = in.nextBigInteger();
            BigInteger c = in.nextBigInteger();
            if(a.add(b).compareTo(c)>0 && a.add(c).compareTo(b)>0 && c.add(b).compareTo(a)>0) {
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }

        }
    }

    public static void main2(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            BigInteger n = in.nextBigInteger();
            BigInteger r = in.nextBigInteger();
            if(n.doubleValue() <= r.doubleValue()*2*3.14) {
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }
    }

    public static void main1(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()){
            BigInteger[] integers = new BigInteger[2];
            integers[0] = scanner.nextBigInteger();//喵的身长
            integers[1] = scanner.nextBigInteger();//碗的半径
            if ((integers[1].doubleValue() * 2 * 3.14) < integers[0].doubleValue()){
                System.out.println("No");
            }else {
                System.out.println("Yes");
            }
        }
    }
}